Ordinal loss for human pose

virtual viewpoint를 활용한 ordinal loss

https://arxiv.org/pdf/2304.11970.pdf

equation (7)

수식이 뭔가 잘못되어서 찾아보니 그냥 틀린거임.

https://arxiv.org/pdf/1805.04095.pdf

실제 구현은 이러함

https://github.com/zerchen/gSDF/blob/master/common/loss/ordinal_loss.py#L145

 

참고:

https://www.vedantu.com/question-answer/does-a-dot-product-equal-to-one-mean-class-11-physics-cbse-610cb4854d5f1d00a97380e8

What does a dot product equal to one mean?

https://en.wikipedia.org/wiki/Vector_projection#:~:text=The%20projection%20of%20a%20vector,plane%2C%20the%20second%20is%20orthogonal.